TXX-4787, Interim Significant Deficiency Rept CP-86-23 Re Potential Failure of P-10 Reactor Protection Sys Permissive.Initially Reported on 860403.Evaluation Continuing.Next Rept Will Be Submitted by 860604
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| ML20197H022 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 05/05/1986 |
| From: | Counsil W, Keeley G TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| CP-86-23, TXX-4787, NUDOCS 8605190031 | |
| Download: ML20197H022 (1) | |
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|---|---|
Category:DEFICIENCY REPORTS (PER 10CFR50.55E & PART 21)
MONTHYEARML18016A9011999-04-12012 April 1999
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, Log # TXX-4787 File # 10110 TEXAS UTILITIES GENERATING COMPANY 907.2 SKYW AY TOWER a 400 NORTH OLIVE AfTREE R'. L.B. St . DALLAN. TEX AS 75301 g Cu rw wks pass esse? '
IN - 9 BBS j Mr. Eric H. Johnson, Director Division of Reactor Safety and Projects
~-
h U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76012
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION DOCKET NOS. 50-445 AND 50-446 P-10 PERMISSIVE SDAR: CP-86-23 (INTERIM REPORT)
Dear Mr. Johnson:
\
On April 3, 1986, we verbally notified your Mr. T. F. .iesterman of a deficiency involving a potential failure of the react;. protection system-permissive, P-10, to reset during power reduction to below the P-10 setpoint. This is an interim report of a potentially reportable item under the provisions of 10CFR50.55(e).
This evaluation is the result of a notification provided to the NRC by Westinghouse. We are continuing our evaluation,and anticipate submitting our next report by June 4, 1986.
Very truly yours, h'th W. G. C nsil
, By: 64 -
d G. S. Keeley Manager, Lttr /,n r JCH/grr V
c- NRC Region IV (0 + 1 copy)
Director, Inspection & Enforcement (15 copies)
U. S.. Nuclear Regulatory Commission Washington, D.C. 20555 8605190031 860505 PDR ADOCK 05000445 S PDR I $
A inVISION OF TEXAS UTIE2 TIES ELECTRIC mMPANY .